MPS1A

NOTE This is for a Short form kit (Instructions and PCBs only) and includes:8 x Microphone pre-amplifier PCBes8 x LED VU meter PCBes1 x Power supply PCB1 x printed set of instructions Similar to the bundle shown in the first picture, except with 8 sets of Mic Pre-amp boards (a set being one pre-amp, and one level meter board) and one power supply board. Pictures of completed boards are for reference only. The Pre-amplifier is based on the SSM2017 or INA217 with Servo-nulling. It also includes options for; 10dB pad, Phantom power, Invert switch, High pass filter and 12 LED Vu meter board. The Pre-amplifer and VU meter boards have a footprint of 75mm by 75mm, so 4 of them will easily fit side by side in a 1RU case. The power supply uses a Voltage multiplier to generate the 48V supply, so it only requires a readily available 15-0-15 or 30 V centre tapped transformer. The power supply will deliver +/- 15V at 1 amp and 48V at 200mA Further information may be found at: http://www.atps.net/Projects/Mic_Pre_and_VU.html or http://www.atps.net/Projects/Mic%20Pre.pdf Note I have a number of these to sell, but Ebay will only let me list them one at a time unless I have a merchant account. As I am not (yet) earning enough money to justify a merchant account I will just relist as/if they sell. So if you would like more than one, I can do a better price (depending on quantity) as well as possibly saving on shipping so contact me. If you are a Digikey customer, I have shared shopping carts for all parts except the reverse Log potentiometer - although if you search Ebay for "10K reverse Log" or even "10KC Potentiometer" you should find a few, like eBay item number: 141302328919 Also the switches (in the shared shopping cart) cost $5 each, whereas I got mine off eBay for less than $1 each, by searching "angle spdt toggle" and "angle dpdt toggle" such as eBay item number: 371730273227 and 222338460454 Also you can usually pick up assorted packs of 100 or more LEDs for only a couple of dollars off eBay The shared shopping cart for this kit is: http://www.digikey.com.au/short/3r7b7q - please note that the Digikey shopping cart was created based on the least expensive decent components, in stock at the time. This means parts may be better than specified (for example higher value filter capacitors where these were less expensive), Also stock will have changed, so treat the Digikey shopping cart as a starting point. May be picked up from Hornsby, north of Sydney Unfortunately it is starting to cost too much re-sending items due to non-delivery by tracked means, so I am going have to exclude some Countries from my shipping list.If you do live in any country excluded in this listing, and wish to buy these PCBes shipping will cost $32 - please contact me